The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2017
Filed:
Jan. 26, 2012
Applicants:
Juergen Gebhard, Buchs, CH;
Simon Oppeneiger, Hoechst, AT;
Corinna Achleitner, Bludenz, AT;
Mirco Fleige, Munich, DE;
Inventors:
Juergen Gebhard, Buchs, CH;
Simon Oppeneiger, Hoechst, AT;
Corinna Achleitner, Bludenz, AT;
Mirco Fleige, Munich, DE;
Assignee:
Hilti Akitengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21H 3/06 (2006.01); B21H 3/04 (2006.01);
U.S. Cl.
CPC ...
B21H 3/06 (2013.01); B21H 3/04 (2013.01);
Abstract
A rolling die for forming a screw thread on a screw blank is disclosed. The rolling die has a plurality of grooves, where the grooves each have two flanks as seen in cross-section. At least a portion of each of the grooves has a forming area in which the size of a profile angle enclosed by the flanks decreases continuously along the grooves.